They are talking about Americans on this site, who very often work at companies that GDPR is made to stop predating on users. Many European users here also works at such companies, so you often see it from them as well, but not as often since those companies are mostly American.
Ah got it, I totally missed that context here somehow. I hadn't noticed a habit of Americans here complaining about GDPR, but that's interesting given another common pattern here of libertarian ideas. An American complaining about a different countries internal policies doesn't seem particularly libertarian.